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MONITORING WELL, SAMPLrING DATA <br />' Protect Name Stockton Maintenance Sta Protect Number 58475-06-24 <br />' WeIl No VW-1 Date 5/10/02 <br /> Well Diameter 4 in Field Personnel 7E <br /> ' Casing Length 66 71 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br /> ' PURGE CHARACTERISTICS <br /> ' Water Depth Before Purging 49 09 ft 2 in= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> Calculated Water Column Volume 11 50 Gal Volumes Purged 3 0 <br /> ' Start Purging Time 1235 End Purging Time 1245 <br /> Total Time 10 min Flow Gauge to <br /> ' Total Volume Pumped 35 Gal Avg Flow Rate 3 5 gpm <br /> Water Depth After Purging feet Time <br /> SAMPLING CHARACTERISTICS <br /> Purging Method Submersible Pump 11 Sampling Method Disposable Bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, 5 FOCs by EPA Test Method 8260 <br /> ' TIME TEMPERATURE CONDUCTIVITY pH Gallons <br /> (°C) (umhos/cm) Purged <br /> 1239 224 654 7 13 12 <br /> ' 1242 218 663 708 24 <br /> 1245 21 7 674 709 35 <br /> 1255 Sample <br /> Comments Purge water clear, strong odor <br /> Turbidity= -006 ntu <br />